The Tethyan section near Dax (Tercis les Bains*
The Campanian-Maastrichtian boundary has never been formally defined; in addition to a number of other less common uses two current practices exist: they con-sider the first occurrence (FO) of the boreal endemic key taxon Belemnella lanceolata (belemnite) and the last occurrence (LO) of the oceanic...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.553.435 |
| Summary: | The Campanian-Maastrichtian boundary has never been formally defined; in addition to a number of other less common uses two current practices exist: they con-sider the first occurrence (FO) of the boreal endemic key taxon Belemnella lanceolata (belemnite) and the last occurrence (LO) of the oceanic Radotruncana calcarata (planktonic foraminifera). Based on indirect correla-tion, the boreal FO is distinctly younger compared to the Tethyan LO. |
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